The Spirit Realm is the name of the afterlife world that many kung fu masters depart to after they pass away from the mortal realm. It is the plane of existence where Master Oogway resides, as well as several other spirits.
The appearance of the Spirit Realm is indirectly related to the spirit energy of the strongest presence currently residing in it. In the beginning of Kung Fu Panda 3, Kai's battle with Oogway leaves the Spirit Realm destroyed, with hues of jade green being the primary color. In Chinese culture, the color green is associated with health, prosperity, and harmony, a direct polar opposite to the actions of the antagonist.
After Kai's defeat, the Spirit Realm takes on a solid golden tone, mimicking Po's arrival as the Dragon Warrior and subsequent victory over Kai. Gold symbolises brightness, purity, and fulfilment. Green and gold are the contrasting and main thematic colors of Kung Fu Panda 3, representing the Protagonist's Chi and the Antagonists Chi.
- Kai (destroyed)
- Po (briefly)
- Badger Twins
- Tai Lung
- Thundering Rhino
- Other unnamed kung fu masters
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To save his friends and family from having their chi stolen by Kai, Po jumped on Kai himself around the villain in a headlock and used the Wuxi Finger Hold on himself, as the technique only works on mortals, not a Spirit Warrior like Kai, sending them both into the Spirit Realm. They fight again, but Kai overpowers Po and prepares to steal his chi. Using what they learned from Po and about who they are, Li, Tigress, Mr. Ping and the pandas are able to use their chi to save him. Po, with the chi flow, suddenly generates a golden dragon-shaped avatar around him and destroys Kai by overloading him with his chi, freeing all of the Kung Fu masters in the process.
In an ethereal golden pond, Po met with Oogway, who remarked on how much the Dragon Warrior had grown, revealing that he was the one who sent the message to his father Li that Po was alive. Additionally, he revealed that the reason why he chose him as the Dragon Warrior was because he was reminded of his panda ancestors, and his embodiment of the yin-yang. Oogway passed Po a jade staff with the yin-yang symbol at its end, acknowledging the panda as his true successor, which Po used to return to the mortal realm.
- The Spirit Realm was once called the Celestial Realm, in which it was envisioned with more star fields, galaxies and nebulae, but it was eventually changed due to the realm appearing "more sci-fi and less astronomic."